There is a house in the mountain, a house with stairs where a rock is lying, a rock with a hole from where a cricket is coming out... In this funny and cute book, little kids will discover a series of things that could be hidden in a mountain. Magic illustrations give birth to what can be housed within something else, appealing to the imagination and taking a look from the macro to the micro, with a revealing end. How many possibilities are there? Try to guess and see what you can find in a mountain!